There are two ways that I recommend cooking these: microwave/pan-fry and oven roasting. I will explain both and the reasons. Both start with: 1 - Peel and cube potatoes. Cubes should be roughly 1 inch square. For oven roasting: 2 - Pre-heat oven to 200'C (400'F) 3 - Add all other ingredient into a large bowl and mix thoroughly. 4 - Add potatoes and stir until the potatoes are completely coated with the spice mix. 5 - Spread evenly into a large baking pan. Potatoes should be one layer deep. 6 - Drizzle any remaining spice mix over the top. 7 - Insert into oven on middle rack and reduce heat to between 175'C (350'F) and 150'C (300'F). Cooking time will vary depending on temperature and what is being cooked with them. Test occasionally. Potatoes are ready when the center has gelled. For microwave/pan-fry version: 2 - Move potatoes to a large micro-safe bowl. 3 - Microwave on high for 10 minutes. 4 - Remove from microwave, toss potatoes to redistribute. 5 - Repeat this until the potatoes form a skin, usually about 30 minutes. 6 - Heat large skillet or wok to hi and add oil and coat the pan. 7 - When oil is hot, stir in potatoes carefully. Watch for spitting. 8 - Reduce medium-high. 9 - Keep stirring potatoes to prevent sticking until the skins crisp up. 10 - Add diced onions if desired at this point. 11 - Once the skins turn crisp, reduce heat to medium heat and add spices. 12 - Continue to stir to evenly distribute spices and cook for another 10-20 minutes, or until the centers have gelled. 13 - Stir in green onions if being used. 14 - Serve with a slotted spoon to strain any excess oil.